The Answer is The third equation has a term with a pair of whistles. The last line involves a single whistle. Furthermore, the man in the second and third lines are wearing a whistle, but the man in the last line is not wearing a whistle. Presumably the value of the whistle should be accounted for to get the correct answer. The pictures can be translated into the following equations: shoes + shoes + shoes = 30 shoes + (man + whistle) + (man + whistle) = 20 (man + whistle) + 2(whistles) + 2(whistles) = 13 shoes + (man) x (whistle) = ? From the first equation we can solve for the shoes value: shoes + shoes + shoes = 30 3(shoes) = 30 shoes = 10 We can then solve the second equation for the (man + whistle) value: shoes + (man + whistle) + (man + whistle) = 20 10 + 2(man + whistle) = 20 2(man + whistle) = 10 man + whistle = 5 Then we solve the third equation for the whistle: (man + whistle) + 2(whistles) + 2(whistles) = 13 5 + 4(whistles) = 13 4(whistles) = 8 whistle = 2 We also need to solve for the value of the man: man + whistle = 5 man + 2 = 5 man = 3 Now we can evaluate the final expression, remembering the order of operations that multiplication should be evaluated before addition: shoes + (man) x (whistle) = ? 10 + 3 x 2 = 10 + 3 x 2 = 10 + 6 = 16
Explaination:- The third equation has a term with a pair of whistles. The last line involves a single whistle. Furthermore, the man in the second and third lines are wearing a whistle, but the man in the last line is not wearing a whistle. Presumably the value of the whistle should be accounted for to get the correct answer. The pictures can be translated into the following equations: shoes + shoes + shoes = 30 shoes + (man + whistle) + (man + whistle) = 20 (man + whistle) + 2(whistles) + 2(whistles) = 13 shoes + (man) x (whistle) = ? From the first equation we can solve for the shoes value: shoes + shoes + shoes = 30 3(shoes) = 30 shoes = 10 We can then solve the second equation for the (man + whistle) value: shoes + (man + whistle) + (man + whistle) = 20 10 + 2(man + whistle) = 20 2(man + whistle) = 10 man + whistle = 5 Then we solve the third equation for the whistle: (man + whistle) + 2(whistles) + 2(whistles) = 13 5 + 4(whistles) = 13 4(whistles) = 8 whistle = 2 We also need to solve for the value of the man: man + whistle = 5 man + 2 = 5 man = 3 Now we can evaluate the final expression, remembering the order of operations that multiplication should be evaluated before addition: shoes + (man) x (whistle) = ? 10 + 3 x 2 = 10 + 3 x 2 = 10 + 6 = 16
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